Buggy code:
public class PlotCommand { private static FileConfiguration config = CityZen . getPlugin ( ) . getConfig ( ) ; public static boolean delegate ( CommandSender sender , String [ ] args ) { } private static void select ( CommandSender sender , String [ ] args ) { } private static void create ( Citizen citizen , City city , CommandSender sender , String [ ] args ) { } private static void move ( Citizen citizen , City city , CommandSender sender , Plot plot , String [ ] args ) { } private static void list ( CommandSender sender , String [ ] args ) { } private static void price ( CommandSender sender , String [ ] args ) { } private static void buy ( CommandSender sender ) { } private static void available ( CommandSender sender , String [ ] args ) { } private static void claim ( CommandSender sender ) { } private static void delete ( CommandSender sender ) { } private static void abandon ( CommandSender sender ) { } private static void wipe ( CommandSender sender ) { } private static void invite ( CommandSender sender , String [ ] args ) { } private static void inviteReply ( CommandSender sender , String [ ] args ) { } private static void modifyowners ( CommandSender sender , String [ ] args ) { } private static void info ( CommandSender sender ) { } private static void setprotection ( CommandSender sender , String [ ] args ) { if ( sender instanceof Player ) { if ( sender . hasPermission ( "cityzen.plot.setprotection" ) ) { Citizen citizen = Citizen . getCitizen ( sender ) ; if ( citizen != null ) { Plot plot = City . getCity ( sender ) . getPlot ( sender ) ; if ( plot != null ) { if ( ( ( plot . getOwners ( ) . contains ( citizen ) ) || ( citizen . isCityOfficial ( ) ) ) || ( sender . hasPermission ( "cityzen.plot.setprotection.others" ) ) ) { if ( ( args . length ) > 1 ) { switch ( args [ 1 ] . toLowerCase ( ) ) { case "0" : case "none" : case "pu" : case "pub" : case "public" : plot . setProtectionLevel ( PUBLIC ) ; sender . sendMessage ( ( ( ( ChatColor . BLUE ) + "You<seq2seq4repair_space>set<seq2seq4repair_space>the<seq2seq4repair_space>protection<seq2seq4repair_space>level<seq2seq4repair_space>for<seq2seq4repair_space>this<seq2seq4repair_space>plot<seq2seq4repair_space>to<seq2seq4repair_space>PUBLIC.<seq2seq4repair_space>" ) + "Any<seq2seq4repair_space>player<seq2seq4repair_space>can<seq2seq4repair_space>now<seq2seq4repair_space>build<seq2seq4repair_space>in<seq2seq4repair_space>this<seq2seq4repair_space>plot." ) ) ; break ; case "1" : case "c" : case "co" : case "com" : case "comm" : case "communal" : plot . setProtectionLevel ( COMMUNAL ) ; sender . sendMessage ( ( ( ( ChatColor . BLUE ) + "You<seq2seq4repair_space>set<seq2seq4repair_space>the<seq2seq4repair_space>protection<seq2seq4repair_space>level<seq2seq4repair_space>for<seq2seq4repair_space>this<seq2seq4repair_space>plot<seq2seq4repair_space>to<seq2seq4repair_space>COMMUNAL.<seq2seq4repair_space>" ) + "Any<seq2seq4repair_space>Citizen<seq2seq4repair_space>of<seq2seq4repair_space>this<seq2seq4repair_space>City<seq2seq4repair_space>can<seq2seq4repair_space>now<seq2seq4repair_space>build<seq2seq4repair_space>in<seq2seq4repair_space>this<seq2seq4repair_space>plot." ) ) ; break ; case "2" : case "p" : case "pr" : case "pro" : case "prot" : case "protected" : plot . setProtectionLevel ( PROTECTED ) ; sender . sendMessage ( ( ( ( ChatColor . BLUE ) + "You<seq2seq4repair_space>set<seq2seq4repair_space>the<seq2seq4repair_space>protection<seq2seq4repair_space>level<seq2seq4repair_space>for<seq2seq4repair_space>this<seq2seq4repair_space>plot<seq2seq4repair_space>to<seq2seq4repair_space>PROTECTED.<seq2seq4repair_space>" ) + "Only<seq2seq4repair_space>City<seq2seq4repair_space>officials<seq2seq4repair_space>can<seq2seq4repair_space>now<seq2seq4repair_space>build<seq2seq4repair_space>in<seq2seq4repair_space>this<seq2seq4repair_space>plot." ) ) ; break ; default : <START_BUG> sender . sendMessage ( ( ( ( ( ChatColor . RED ) + "\"" ) + ( args [ 1 ] ) ) + "\"<seq2seq4repair_space>is<seq2seq4repair_space>not<seq2seq4repair_space>a<seq2seq4repair_space>protection<seq2seq4repair_space>level.<seq2seq4repair_space>Valid<seq2seq4repair_space>levels:<seq2seq4repair_space>public,<seq2seq4repair_space>communal,<seq2seq4repair_space>private." ) ) ; <END_BUG> } } else sender . sendMessage ( Messaging . notEnoughArguments ( "//plot<seq2seq4repair_space>setprotection<seq2seq4repair_space><level>" ) ) ; } else sender . sendMessage ( Messaging . notPlotOwner ( ) ) ; } else sender . sendMessage ( Messaging . noPlotFound ( ) ) ; } else sender . sendMessage ( Messaging . missingCitizenRecord ( ) ) ; } else sender . sendMessage ( Messaging . noPerms ( "cityzen.plot.setprotection" ) ) ; } else sender . sendMessage ( Messaging . playersOnly ( ) ) ; } }

Fix:
sender . sendMessage ( ( ( ( ( ChatColor . RED ) + "\"" ) + ( args [ 1 ] ) ) + "\"<seq2seq4repair_space>is<seq2seq4repair_space>not<seq2seq4repair_space>a<seq2seq4repair_space>protection<seq2seq4repair_space>level.<seq2seq4repair_space>Valid<seq2seq4repair_space>levels:<seq2seq4repair_space>public,<seq2seq4repair_space>communal,<seq2seq4repair_space>protected." ) ) ;